Abstract

A method of manufacturing an external cover edge of a molded cup lid and a product manufactured by the method includes an intermediate product of the molded cup lid made of plant fiber and manufactured by both “pulp suction shaping” and “thermal compression shaping” processes. A protruding-out outer cover edge is formed around the periphery of the intermediate product.

IPC Classes  ?

• B65D 43/02 - Removable lids or covers
• D21J 3/00 - Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds

Abstract

A manufacturing method for the outer covering edge (43) of a molded cup lid (40) and product, in particular, the manufacturing method in which plant-fiber is used for material, pulp-shaping and heat-pressure shaping are applied to produce a semi-finished product (400) of the molded cup lid (40), and further processing is performed to mold a ring of outer covering edge (43) that protrudes from inside to the outside on the periphery of the semi-finished product (400); and the molded cup lid (40) product manufactured using said method.

IPC Classes  ?

• B65D 43/08 - Removable lids or covers having a peripheral flange fitting over the rim of the container
• B29C 43/50 - Removing moulded articles
• B29C 45/73 - Heating or cooling of the mould

Abstract

A manufacturing method for the outer covering edge (43) of a molded cup lid (40) and product, in particular, the manufacturing method in which plant-fiber is used for material, pulp-shaping and heat-pressure shaping are applied to produce a semi-finished product (400) of the molded cup lid (40), and further processing is performed to mold a ring of outer covering edge (43) that protrudes from inside to the outside on the periphery of the semi-finished product (400); and the molded cup lid (40) product manufactured using said method.

IPC Classes  ?

• B65D 43/08 - Removable lids or covers having a peripheral flange fitting over the rim of the container
• B29L 31/56 - Stoppers or lids for bottles, jars, or the like
• B29C 43/50 - Removing moulded articles
• B29C 45/73 - Heating or cooling of the mould

Abstract

A method of making an inverted-hook groove for a plant fiber-molded cup lid is to form an inverted-hook groove on a side surface of a plant-fiber molded cup lid, which has already been thermally compressed and shaped, processed and shaped once more to form an inverted-hook groove at the side surface of the molded cup lid so that the molded cup lid with the inverted-hook groove can be tightly and closely combined with the upper edge of a primary cup body. The method of making an inverted-hook groove for a plant-fiber molded cup lid of this invention is classified into three kinds; a method of compression shaping directly, a method of roller compression shaping and a method of air bag compression shaping.

IPC Classes  ?

• B29C 43/04 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
• B29C 43/00 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
• B29C 43/36 - Moulds for making articles of definite length, i.e. discrete articles
• B29K 105/26 - Scrap
• B29L 1/00 - Articles provided with screw threads
• B29L 31/56 - Stoppers or lids for bottles, jars, or the like
• B29L 31/00 - Other particular articles